Results on CLIC proof of principle from CTF3

The CLIC Test Facility CTF3, built at CERN by an international collaboration, aims at demonstrating the feasibility of the CLIC scheme of multi-TeV electron- positron collider by 2010. CTF3 consists of a 150 MeV drive beam linac followed by a 42 m long delay loop and an 84 m combiner ring. The installation will include in its final configuration a two-beam test stand and a test decelerator. The linac and delay loop have been already commissioned, while the combiner ring has been completed by the first half of 2007. High gradient testing of accelerating structures is also under way. The status of the facility, the experimental results obtained and the future plans will be presented.